Version 4
SHEET 1 2308 696
WIRE 336 -208 -64 -208
WIRE 464 -208 336 -208
WIRE 1184 -208 544 -208
WIRE 1552 -208 1184 -208
WIRE 1552 -112 1552 -208
WIRE 1904 -112 1552 -112
WIRE 2080 -112 1904 -112
WIRE 1552 -64 1552 -112
WIRE -32 -32 -208 -32
WIRE 96 -32 48 -32
WIRE 1184 -16 1184 -208
WIRE 1904 32 1904 -112
WIRE 1184 112 1184 48
WIRE -64 128 -64 -208
WIRE -208 144 -208 -32
WIRE -96 144 -208 144
WIRE 2080 144 2080 -112
WIRE 96 160 96 -32
WIRE 96 160 -32 160
WIRE 480 160 96 160
WIRE 592 160 544 160
WIRE 784 160 672 160
WIRE 1552 160 1552 16
WIRE 1552 160 1440 160
WIRE 1712 160 1552 160
WIRE -96 176 -144 176
WIRE 96 176 96 160
WIRE 1184 224 1184 192
WIRE 1376 224 1376 160
WIRE 1376 224 1184 224
WIRE 1712 224 1712 160
WIRE 336 256 336 -208
WIRE 1184 272 1184 224
WIRE 1904 272 1904 112
WIRE -144 288 -144 176
WIRE 96 288 96 256
WIRE 96 288 -144 288
WIRE 96 320 96 288
WIRE 784 320 784 160
WIRE 928 320 784 320
WIRE 1120 320 1008 320
WIRE 1136 320 1120 320
WIRE 1712 320 1712 304
WIRE 1840 320 1712 320
WIRE -208 336 -208 144
WIRE 1712 336 1712 320
WIRE 784 368 784 320
WIRE 1552 368 1552 160
WIRE -208 448 -208 400
WIRE 96 448 96 400
WIRE 96 448 -208 448
WIRE 336 448 336 336
WIRE 336 448 96 448
WIRE 1552 480 1552 432
WIRE 1712 480 1712 416
WIRE 1712 480 1552 480
WIRE 1904 480 1904 368
WIRE 1904 480 1712 480
WIRE 2080 480 2080 224
WIRE 2080 480 1904 480
WIRE 336 512 336 448
WIRE -64 624 -64 192
WIRE 336 624 336 592
WIRE 336 624 -64 624
WIRE 784 624 784 448
WIRE 784 624 336 624
WIRE 1184 624 1184 368
WIRE 1184 624 784 624
WIRE 1552 624 1552 480
WIRE 1552 624 1184 624
WIRE 336 656 336 624
FLAG 336 656 0
SYMBOL Opamps\\opamp2 -64 96 R0
SYMATTR InstName U1
SYMATTR Value LM741
SYMBOL res 80 160 R0
WINDOW 3 36 68 Left 2
SYMATTR Value 100K
SYMATTR InstName R1
SYMATTR SpiceLine tol=5 pwr=0.25
SYMBOL res 80 304 R0
SYMATTR InstName R2
SYMATTR Value 10K
SYMATTR SpiceLine tol=5 pwr=0.25
SYMBOL res 320 240 R0
SYMATTR InstName R4
SYMATTR Value 1K
SYMATTR SpiceLine tol=0.25
SYMBOL res 64 -48 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R5
SYMATTR Value 180K
SYMATTR SpiceLine tol=5 pwr=0.25
SYMBOL cap -224 336 R0
WINDOW 3 24 36 Left 2
SYMATTR Value 0.01µ
SYMATTR InstName C1
SYMATTR SpiceLine V=25 Irms=160m Rser=0.444602 Lser=0 mfg="KEMET" pn="C1812C103K3RAC" type="X7R"
SYMBOL cap 544 144 R90
WINDOW 0 0 32 VBottom 2
WINDOW 3 28 32 VBottom 2
SYMATTR InstName C2
SYMATTR Value 0.1µ
SYMATTR SpiceLine V=16 Irms=4.39 Rser=0.0357547 Lser=0
SYMBOL res 320 496 R0
SYMATTR InstName R3
SYMATTR Value 1K
SYMATTR SpiceLine tol=5 pwr=0.25
SYMBOL res 560 -224 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R6
SYMATTR Value 33
SYMATTR SpiceLine tol=5 pwr=0.25
SYMBOL res 768 352 R0
SYMATTR InstName R8
SYMATTR Value 10K
SYMATTR SpiceLine tol=5 pwr=0.25
SYMBOL LED 1168 -16 R0
SYMATTR InstName D1
SYMATTR Value PT-121-B
SYMBOL npn 1120 272 R0
SYMATTR InstName Q1
SYMATTR Value BC547C
SYMBOL res 1168 96 R0
SYMATTR InstName R7
SYMATTR Value 680
SYMATTR SpiceLine tol=5 pwr=0.25
SYMBOL res 1024 304 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R9
SYMATTR Value 1K
SYMATTR SpiceLine tol=1 pwr=0.1
SYMBOL res 1536 -80 R0
SYMATTR InstName R11
SYMATTR Value 10k
SYMBOL res 1696 208 R0
SYMATTR InstName R13
SYMATTR Value 10k
SYMBOL cap 1536 368 R0
SYMATTR InstName C3
SYMATTR Value 220µ
SYMBOL diode 1440 144 R90
WINDOW 0 0 32 VBottom 2
WINDOW 3 32 32 VTop 2
SYMATTR InstName D2
SYMATTR Value 1N4148
SYMBOL npn 1840 272 R0
SYMATTR InstName Q3
SYMATTR Value BC547B
SYMBOL res 1888 16 R0
SYMATTR InstName R14
SYMATTR Value 1k
SYMBOL voltage 2080 128 R0
WINDOW 123 0 0 Left 2
WINDOW 39 0 0 Left 2
SYMATTR InstName V1
SYMATTR Value 12
SYMBOL res 1696 320 R0
SYMATTR InstName R15
SYMATTR Value 10k
SYMBOL res 688 144 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R10
SYMATTR Value 10K
SYMATTR SpiceLine tol=1 pwr=0.1
TEXT -16 128 Left 2 !.inc LM741.mod
TEXT -224 680 Left 2 !.tran .1000